MP3 as an audio playback device, with the maturity of technology and customer demand for high quality. Many manufacturers began to produce waterproof MP3. Its waterproof level can reach IP67. Even if this mp3 is put in the water, the music can still play normally. Today we want to test the product is MP3, customers require testing MP3 overall waterproof performance, waterproof grade is ipx7. The following is the relevant MP3 sealing test method, I hope you have a new understanding of the waterproof detector.
(MP3 sealing tester)
1、 Analysis of MP3 appearance display
The sealing of MP3 needs good materials and relevant sealing technology. The front is the display area and operation twist of MP3, and the whole is irregular square. The stability of the product and the accuracy of the test results need to be maintained when testing. In addition, MP3 also uses relevant auxiliary supplies to form a more sealed structure.
2、 The sealing test of MP3
1. MP3's shape is special, and its material is highly sealed, so it is necessary to maintain its sealing property during detection, so as to avoid external pollution of MP3's working environment;
2. The shell damage due to the sealing problem may lead to the damage of internal parts;
3. If the sealing is not in place, the internal parts will be damaged, and the service life and safety degree will be reduced.
3、 Mp3 sealing test process display
As the MP3 overall seal is not suitable for direct detection, Harris technology adopts indirect detection, but in order to assist in detection, we need to make corresponding molds and tooling. Mold modeling and product modeling fit, which is divided into upper mold and lower mold. When the upper mold and lower mold are closed, a closed detection space can be formed, which is conducive to the realization of high-precision sealing detection. The mold is not only used as the container of MP3, but also as the protection device in the detection. The mold can isolate the influence of the outside world on MP3 in the detection, and realize the non-destructive detection;
(MP3 sealing test process display)
In addition, the device will fill a certain pressure, dry, moisture-free and impurity free gas into the closed mold, then cut off the compressed air supply, and keep the pressure stable for a period of time. After a given measurement time, it can monitor the tiny change of air pressure in the detection environment. The sensor transmits this information to the detection system. Finally, after a series of calculations, the leakage value of the gas can be obtained, and the sealing condition of mp3 can be detected according to the leakage value;
(MP3 sealing test tooling)
The airtightness tester has the advantages of high automation, short detection time and simple operation interface. The tester is also equipped with "positive and negative" pressure forms and 8 Basic test modes, which can be selected or combined. Using 24 bit a / D conversion, 32-bit CPU operation, and fully independent development of industrial control operating system, with full touch human-computer interface. Built in RS232 serial port, RJ45 network port, USB communication interface, LTP external I / O control port, support a variety of communication protocols, diversified self-service operation, artificial and intelligent combination, enhance the operability of the device.
4、 Parameter table of MP3 sealing tester
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